This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 17 |
| 4 | 774 |
| 5 | 76035 |
| 6 | 10866362 |
| 7 | 2130866037 |
| 8 | 551607137250 |
| 9 | 182413680759659 |
| 10 | 75075411378226014 |
| 11 | 37647855624072772341 |